She is substantive Principal Administrative Officer at the County Assembly. She holds a Bachelor’s of Commerce Degree (Accounting option) from the University of Nairobi, and a Master’s of Business Administration Degree with specialization in Accounting and Finance from the same university.

She has undertaken Senior Management Courses at the Kenya School of Government including Strategic Leadership Development Programme as well acquiring several trainings on Parliamentary Studies and Human Resource Management

Ms. Ariko started her career in the now defunct local authority as an Executive Secretary in the year 2004 and rose through the ranks to the level of an Administrative Officer. At the onset of devolution in 2013, Ms. Ariko was deployed to the County Assembly of Kakamega by the Transition Authority as an Administrative Officer. She was later confirmed into appointment as the Senior Administrative Officer in 2015, before being promoted to Principal Administrative Officer in April 2022.

The holder of the office of the Clerk also serves as the Secretary to the County Assembly Service Board and the Chief Executive Officer. He/she oversees the day to day affairs at the County Assembly and supervises officers within the Service. He/she is also the Accounting Officer as well as the A.I.E Holder. This is in addition to legislative and procedural roles such as advising the Speaker, Committees and Members of the County Assembly.